120nS and 150ns..
No, that's not mine SD interface (i have to finish it yet) This is built by local msx freak
The board is auto-loading cartridge simulator (loads ROM from SD, configures FPGA as appropriate mega- or rom mapper - and go)
its a What???
where can i find more info on this thing??
No, that's not mine SD interface (i have to finish it yet) This is built by local msx freak
The board is auto-loading cartridge simulator (loads ROM from SD, configures FPGA as appropriate mega- or rom mapper - and go)
because on my side i am not that skilled for soldering , more "middle age" , look at my on going sd interface + some stuffs :
one of my msx'es runs fine without the m1 wait 
really ? what is the acces time rom/Rams ?
actually there is a way to program a wait state generator inside Z280 , but it requires one external ic , during reset some value has to be forced on databus.
I guess that depends on the time AND maker. And parts. I never saw RAM slower than 150ns; some ROMS in older computers were pretty slow, but i'm positively sure that most of MSX* computers made since 1985 can do 10 mhz busclock. At least ones with S3527, 120ns RAM and non-reprogrammable BIOS chips from Yamaha.
No, that's not mine SD interface (i have to finish it yet) This is built by local msx freak
The board is auto-loading cartridge simulator (loads ROM from SD, configures FPGA as appropriate mega- or rom mapper - and go)
its a What???
where can i find more info on this thing??
http://zx.pk.ru/showthread.php?t=10713 - original thread;
the guy who made it appears on this site too - AlexBel.
i got a stock of Z280 for 3 us dollar each, cheaper than some 74LS's !!!
Hi Leo! Where did you found the Z280?
ut ressources .com , among others , they are based in singapore , you must ask for quote so price can vary.
You 23 euros pay VAT when you receive package . the ship cost are 28$ (DHL) , so you may want to order a whole bunch of them.
There are sites and others stocks , 9000 pieces around , but prices can go up to 7$.
if you want just one i have many ...

i got z180/33MHz for 2usd each , did not received them yet and i suspect them to be not new & used.
